Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 967
he main bar ; the handle is then carried forward in the direction shown by the arrow, whichcauses the lever to take firm hold of the cylinder and carry it around in the same direction ; and byreversing the motion of the handle, the cylinder is instantly released for a new hold. It will be ob-vious… … ZINC. 957 tion) for each particular Bize of cylinder. It also possesses the advantage of being worked -with oo«band after being set to the particular size required. WRENCH, SCREW. Invented by S. Merbick, of Springfield, Massachusetts, and patented Ao-gust 17, 1836; patenl extended May 14, L849. In…
Mechanical engineering
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